Tag Archives: mvc 5

Umbraco and Donut Output Cache

Donut Output Caching is a type of output caching where certain parts of a web page are not cached. It’s a simple way of boosting your site performance!

ASP.NET doesn’t provide a native way of donut output caching, so we must resort to a great NuGet package called MVCDonutCaching. You can read all about it here: http://www.devtrends.co.uk/blog/donut-output-caching-in-asp.net-mvc-3.

Since Umbraco is built on top of ASP.NET MVC, we can easily use this package on our websites. There are, however, some caveats, because Umbraco doesn’t use the native MVC routing.

For Umbraco, every page that uses the same document type is processed through the same route, therefore, if we have 100 news articles that use the NewsItem document type, from the moment we open one news article page, every other news item page will display the same information, despite having a different URL!

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Remote resource handling in a MVC website project

I don’t have very fond memories of using .Net resource files (.resx) to handle the translation of static web page elements such as form labels.

The Visual Studio resx editor was slow and using it to change resources that were more than a single line of text was a pain. I still have nightmares where I’m trying to edit complete email templates on a single field of a resx file…

The biggest problem with resource files, however, is that they are included in the project. This creates a problem for both the developers and the content managers, since the content managers are not able to change resources themselves, and the developers need to be changing resources files when they could be doing something productive.

The following will show a way to handle resource items in a MVC website project, where the resources can be stored wherever they are more easily handled by content managers: a SharePoint list, a database table, an excel file, or something completely different.

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Azure CDN, BlobStorage and ImageResizer

In a recent project, we had the need to serve website assets and website content images through a CDN network. Furthermore, each image presented in the website content must be available in multiple resolutions.

We ended up serving both the assets and content images through the same Microsoft Azure CDN. This post describes the way we implemented it.

First the easiest part. We have our site in a Azure Website, in order to serve the site’s assets through an Azure CDN we only needed to point the CDN to the website’s URL. So, if the website’s assets are located in something like http://sitedomain/assets/*, instead of referencing the assets through a relative url such as /assets/*, we just need to use the CDN url to serve them: http://cdnurl/assets/*. Through web.config transforms we are also able to use local assets during development and change to CDN only on the production environment.

Regarding the website image content, the solution has three phases.

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A Multi-Tenant Website in MVC

In my most recent project we had the need to build multiple websites that would share some common functionalities but would be installed in separate servers and would be available in different domains.

We were using .NET 4.5 and MVC 5 and there was no out of the box solution for this problem. Throughout my search I came upon this paper and we took some ideas from it. This post describes the main changes to a normal website project we had to make in order to make this work.

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Pre-set common viewmodel properties before action result

So, I defined a master model that is shared by every view in my MVC site. This model defines a bunch of properties that are always used on every page, such as a page title, page description, the google tag manager code, etc.

I need this model to be filled before the action result, so that I can use those properties on the view.

In order to do this, I created a custom Action Filter Attribute that is used by every action:


    public class SetupMasterModelActionFilter : ActionFilterAttribute
    {
        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            ViewResultBase result = filterContext.Result as ViewResultBase;
            if (result == null)
            {
                return;
            }

            MasterModel model = result.Model as MasterModel;
            if (model == null)
            {
                return;
            }

            SetupMasterModel(model);
            SetupViewBag(result, model);
        }

        private void SetupMasterModel(MasterModel model)
        {
            ...
        }

        private void SetupViewBag(ViewResultBase result, MasterModel model)
        {
            ...
        }
   }

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